baber/WOPTO huggingface dataset:
Patent CA-2040336-A1 (CA)
Title: Solid titanium catalyst component for olefin polymerization, olefin polymerization catalyst, prepolymerized polyolefin-containing catalyst and method of olefin polymerization
Inventor: KIOKA MAMORU
IPC: C08F110/06
Filed: 1991-04-12
Abstract: A solid titanium catalyst component [Ia] containing magnesium, halogen, titanium and a compound having at least two ether linkags with a plurality of intermediately existing bonding atoms; a catalyst and a prepolymerized olefin-containing catalyst prepared by using the solid titanium catalyst component [Ia]; a method for preparing a polyolefin wherein said catalyst or prepolymerized olefin containing catalyst is used.  A catalyst and a prepolymerized olefin containing catalyst prepared by using a solid titanium catalyst component [Ib] containing magnesium, halogen, titanium and a specific electron donor (a1), and a compound having at least two ether linkags with a plurality of intermediately existing bonding atoms; a method for preparing a polyolefin wherein said catalyst or prepolymerized olefin containing catayst is used.  By virtue of the use of the catalysts or the prepolymerized olefin-containing catalysts, the polymerization reaction efficiently proceeds with high catalytic activity, giving polymers high in stereospecificity
Patent CA-2044330-A1 (CA)
Inventor: CASTEL YVON
IPC: E21B47/06
Filed: 1991-06-11
Abstract: : La méthode comporte la descente d'un ensemble de pompage et de mesure dans un puits de production pourvu d'un tube perforé dans sa partie traversant une zone productrice. Cet ensemble est fixé à l'extrémité d'une colonne de production et comporte une pompe de d'activation et au moins un ensemble de mesure des effluents produits. Le perfectionnement consiste essentiellement en ce que l'on utilise un moyen de pompage auxiliaire tel qu'une pompe du type volumétrique par exemple, pour supprimer la perte de charge subie par les effluents durant leur traversée de la zone de mesure, qui fausse les valeurs mesurées et provoque des flux parasites par contournement entre le tube et la paroi du puits. Par une variation du débit de la pompe volumétrique, on peut mesurer l'importance de ces débits de fuites. Application à l'étude des puits de production pétrolière par exemple.
Patent CA-2047171-A1 (CA)
Inventor: NEAMTU NICOLAE
IPC: B26B21/22
Filed: 1991-01-07
Abstract: A razor blade member (46) has a first planar portion (60) and a second planar portion (62) connected to the first planar portion (60) by a transition bend region (66).   The longitudinal edge (64) of the first planar portion (60) remote from the transition region (66) is sharpened to a cutting edge.  The blade member (46) also includes stress balancing deformation (68,70) along the longitudinal length of the planar portions and adjacent the transition region (66).  The bow (74) of the second planar portion (62)  is less than 0.05 millimeter per centimeter length of blade member (46).
Patent CA-2047176-A1 (CA)
Title: Shower screen
Inventor: TOOZE PETER J
IPC: A47K3/38
Filed: 1990-02-22
Abstract: SHOWER SCREEN   A folding shower screen comprises an attachment channel member (3, 18) adapted to be secured to a wall (2), e.g., at one end of a bath (1) in general co-planar alignment with the outer side (7) of the bath, a hinge (4) disposed at a lower end of the attachment member, a movable channel member (5, 13) secured to the hinge and pivotable between a stowed position alongside the attachment member and a deployed position (as shown) resting along the bath lip (8), and a generally quadrant shaped collapsible screen element (6) extending between the attachment member (3, 18) and the movable member (5, 13), water collected in a sump (11) being directed towards the bath (1) by a conduit (12) and water collected in the movable channel member (13) being directed into the bath by slots (14) in the one side of the channel member.
Patent CA-2047645-A1 (CA)
Inventor: PARKER ALTON B
IPC: E04H17/14
Filed: 1991-07-24
Abstract: FENCE EMPLOYING FLAT SIDED         GALVANIZED STEEL POSTS AND CHANNEL PARTS            Abstract of the Disclosure A fence frame is disclosed that preferably comprises galvanized steel posts that provide an accessible flat surface  or  surfaces parallel with the  surface of the transverse railings and through which are applied holding bolts for securing the post to adjoining ends of railing sections.   The posts include at least one strengthening vertical bend.   Corner posts employing the same basic structure as the in-line posts or specifically designed posts are provided.  The fence frame comprised of posts and railings are suitable for receiving a fence covering made up of aluminum sheet panels, plastic panels, wood pickets, plastic pickets, metal rods or other coverings of choice.            PARHOOPA.001
Patent CA-2049749-A1 (CA)
Inventor: BRUMLEY ROBERT L JR
IPC: G01N27/447
Filed: 1991-08-23
Abstract: HORIZONTAL GEL ELECTROPHORESIS APPARATUS                  Abstract of the Disclosure A horizontal electrophoresis assembly is described which is designed to utilize very thin gels of polyacrylamide.  The assembly allows for water cooling of the gel during electrophoresis so that higher voltages can be applied to the gel without polymer degradation.  The gel mold is made from a set of glass plates which are clamped into place defining a gel mold between them.  In one embodiment, the site of field introduction is separated from the site of sample introduction so that the electric field is generally linear at the region of sample introduction.
Patent CA-2051786-A1 (CA)
Title: Universal scheme of input/output redundancy in a process control system
Inventor: MCLAUGHLIN PAUL F
IPC: G06F13/00
Filed: 1991-09-18
Abstract: A controller of a control system, which operates as a master, has a slave input/output processor (IOP) connected thereto which communicates with at least one device of a predetermined type, the types including analog input, digital output....   The controller also has a backup slave IOP connected thereto of the same type as the slave IOP, the slave IOP operating as a primary IOP to the device.    A method for providing backup to the slave IOP by the backup slave IOP comprises the steps of loading the backup slave IOP with the same data base as the slave IOP.  The backup slave IOP eavesdrops on all communications from the controller to the slave IOP.  When a write command is communicated to the slave IOP, the backup slave IOP taps the data from the bus and updates its data base.  If the command is not a write command, after verifying the primary IOP has received the write command the backup slave IOP ignores the communication, when a fault is detected by either the slave IOP or the backup slave IOP, the detection of the fault is communicated to the other IOP.  The IOPs then failover such that the backup IOP is operatively connected to the device and the slave IOP is disconnected from the device.  Finally, the controller acknowledges that the backup slave IOP is now operating as the primary source to the device.  The failover occurs without any loss of communications within the control system and is transparent to the control system.
Patent CA-2052888-A1 (CA)
Title: Mercury removal
Inventor: DENNY PATRICK J
IPC: C10L3/10
Filed: 1991-10-07
Abstract: A process for the removal of mercury from a stream wherein an absorbent comprising a metal sulphide is prepared in situ, preferably by the stream also containing a sulphur compound thereby concomitantly preparing the mercury absorbent and absorbing the mercury, such that the formation of ineffective and undesired metal compounds e.g, sulphates is avoided.
Patent CA-2053827-A1 (CA)
Title: Polymer scale preventive composition
Inventor: SHIMIZU TOSHIHIDE
IPC: C08F2/00
Filed: 1991-10-21
Abstract: ABSTRACT OF DISCLOSURE             Polymer scale preventive agent, Polymerization vessel for preventing polymer scale deposition, and Process of producing polymer using said vessel A polymer scale preventive agent for use in polymerization of a monomer having an ethylenic double bond, comprising (A) a nitrogen-containing organic compound having at least five continuous conjugated .pi. bonds, (B) an anionic organic compound having at least one group selected from the group consisting of the sulfonic acid group and the carboxylic group and having at least five continuous conjugated .pi. bonds, and (C) a vinylpyrrolidone-based polymer.  The agent is used for forming a coating on the inner wall, etc. of a polymerization vessel.  Deposition of polymer scale can he effectively prevented not only in the liquid phase area but also in the vicinity of the interface between the gas and liquid phases.  Products formed from polymer obtained have very few fish eyes.
Patent CA-2054152-A1 (CA)
Inventor: DAGENAIS ROBERT
IPC: E05D15/26
Filed: 1991-10-24
Abstract: A hinge construction for joining panels of a foldable closure  assembly,  comprising  a  female  hinge  member including an elongated substantially hollow channel which defines  in  cross-section  an  inner  concave  surface extending along an arc of circle and a fulcrum element in a spaced apart relationship with the concave surface.  A male hinge member is received in the elongated channel for pivotal movement about the fulcrum element.   The male hinge member includes an arcuate member defining in cross-section a convex surface extending along an arc of a circle and being in sliding contact with the concave surface,  the  male  hinge  member  further  including  a supporting leg projecting from the arcuate member and engaging the fulcrum element in a supporting contact, the concave  and  convex  surfaces  being  in  an  eccentric relationship whereby during a pivotal movement between the hinge members the surfaces contact each other in a sliding relationship over a zone smaller than the area of either one of the convex or the concave surfaces.  The invention also extends to a foldable closure assembly comprising a novel hinge.
Patent CA-2054961-A1 (CA)
Inventor: GROSS JAMES R
IPC: A61M25/14
Filed: 1991-11-05
Abstract: A multilumen  catheter  having  a  plurality  of  flexible, elongated catheter tubes concentrically and coaxially disposed, each catheter tube defining a separate lumen, each catheter tube having a distal end which extends outwardly from the distal end of  the next  surrounding catheter  tube,  and each catheter  tube having  a  proximal  end which  is  secured  and encapsulated by  a manifold which  facilitates  fluid communication between each of the  separate  lumens  and  fluid  transfer  devices  or  pressure monitoring devices via separate extension tubing.
Patent CA-2058564-A1 (CA)
Inventor: PERSELLO JACQUES
IPC: D21H21/50
Filed: 1991-12-30
Abstract: New silicoaluminate-based pigments characterised in that they have a surface chemistry such that their number of cationic sites, expressed in micromoles/m<2> of surface, is greater than 0.05. They are prepared by a process consisting in treating a silicoaluminate suspension exhibiting a pH of not more than 8 with an organic or inorganic salt of an at least divalent metal, then in raising the pH of the mixture again to a value higher than or equal to 3.5, in separating the treated silicoaluminate from the said mixture, and then in drying the recovered silicoaluminate. The invention also relates to the use of the said pigments as fillers for paper.
Patent CA-2058565-A1 (CA)
Inventor: TRAISE JOHN E
IPC: B41M5/124
Filed: 1991-12-30
Abstract: ABSTRACT      A simple label-type business form is provided that allows a record sheet to be produced at the same time that indicia is applied to the label.  The business form includes a label construction having a top face on which indicia is readily applied and a bottom face containing pressure sensitive adhesive; a release sheet having at least one opening; and a self-imaging sheet held in contact with a release sheet on the opposite side of the release sheet from the label construction by the label construction pressure sensitive adhesive.  The release sheet preferably has rows and columns of openings, at least three opening in each row and column, and the label construction is a sheet having a number of labels interconnected together, at least one release sheet opening being associated with each of the labels. The self-imaging sheet may have adhesive applied to its bottom face, and a release liner covering that adhesive so that the self-imaging sheet also is a label.  Indicia applied on the top face of the label construction -- as by a writing instrument or an impact printer -- is transferred to the self-imaging face and duplicated on the self-imaging sheet.
Patent CA-2059457-A1 (CA)
Inventor: WEINBERG ALAN
IPC: H02M3/335
Filed: 1992-01-16
Abstract: A switching current converter is connected in parallel with each controlled power switch in an electric cir-cuit so that it is allowed to operate from the input voltage and transfer energy from input to output dur-ing the turn-on periods of the controlled power switch, whereby each power switch is allowed to be turned ON when a near-to-zero voltage is present across it. The switching converter serves as an active power switch stress relieving means, resulting in minimizing the switching loss in the power switch while providing the energy for operation of the power switch in a very efficient way.
Patent CA-2059534-A1 (CA)
Title: Assault deterrent
Inventor: JARVIS COLIN P G
IPC: F41H9/10
Filed: 1990-08-06
Abstract: 2059534 9102338 PCTABScor01 A device to deter a potential assailant consists of an item to be worn or held, such as a glove or a wrist-band or a "knuckle-duster" on which is mounted one or more containers which contain a dye, which may be in the form of a paste, the container being adapted to break when being brought into contact with an assailant.  The assailant will thus be visibly marked. If the device is brightly coloured or otherwise recognisable a potential assailant will be deterred from making an attack.
Patent CA-2061281-A1 (CA)
Inventor: SO EDDY
IPC: G01R19/165
Filed: 1992-02-14
Abstract: A DC current-comparator-based circuit generates an adjustable output proportional to an input signal, i.e. an input voltage or current.  One use of the circuit is in the formation of a DC resistance bridge that can be controlled automatically by a microprocessor.  The ends of a pair of test resistors (the resistances of which are to be compared) are connected to respective ratio windings of the current comparator.  The same potential is applied across these resistors by a master power supply.  A microprocessor is alternately supplied with two voltage signals, a first being proportional to the current in a variable one of the ratio windings of the comparator, and the second being proportional to any inequality between the current in the other ratio winding and the test resistor to which it is connected.  The microprocessor controls a slave power supply that receives both the first signal and a third signal that is indicative of any unbalance in the bridge.  Balance is achieved by adjusting the variable ratio winding.  Another use of the basic circuit is in the formation of an improved digital-to-analog converter, in which case the digital input controls the number of turns on the variable winding and the third signal provides the equivalent analog output.
Patent CA-2061789-A1 (CA)
Title: Manufacture of .alpha.,.beta.-unsaturated aldehydes and ketones
Inventor: MACKENROTH CHRISTIANE
IPC: C07C69/007
Filed: 1992-02-25
Abstract: The preparation of .alpha.,.beta.-unsaturated aldehydes and ketones I      O=C(R1)-CR2=CR3R4~~ I   is carried out by acid hydrolysis of cyclic .alpha.,.beta.-unsaturated acetals II (see formula I) in the presence of saturated aldehydes.
Patent CA-2062784-A1 (CA)
IPC: H02G3/14
Filed: 1990-07-16
Abstract: 2062784 9101578 PCTABS00003 A spring loaded cover for indoor receptacles such as an electrical outlet is provided to prevent damage to the receptacle and electric shock to children resulting from insertion of objects into an electrical receptacle. The cover has a base plate (1) having longitudinal flanges (4) extending from its top surface. Preferably two cover plates (2) have longitudinal slots (6) which coact with the flanges (4) of the base plate to allow the cover plates (2) to slide relative to the base plate (1). Springs (7) force the cover plates (2) to a closed and locked position upon release, or upon removal of a plug from the receptacle. Stop means (14, 13) on the cover (2) and base (1) plates limit the travel of the cover plates (2), and resilient locking means (15, 17) engage the cover plates (2) when in the covered position.
Patent CA-2065422-A1 (CA)
Title: Degazeur annulaire a rendement eleve
Inventor: DELLA PORTA PAOLO
IPC: H01J7/18
Filed: 1990-10-19
Abstract: Un dispositif dégazeur évaporatoire devant être monté dans un tube électronique comprend un support (102) dont le fond (110) est muni d'un moyen (112) qui empêche le matériau (104) de libération de la vapeur métallique de dégazage de s'en détacher. Ledit matériau est pressé à l'intérieur du support et possède, sur sa surface supérieure (116), une pluralité de moyens retardateurs de la transmission thermique (118) disposés en sens circonférentiel dans le matériau de libération de la vapeur métallique de dégazage. Lorsque le dispositif dégazeur est chauffé par des courants induits par un champ à haute fréquence créé par une bobine placée à l'extérieur du tube électronique, des quantités élevées de métal de dégazage sont libérées dans une courte période sans que son résidu ne se détache du support. De préférence, lesdits moyens retardateurs de la transmission thermique comprennent quatre rainures radiales à espacement égal formées dans la surface supérieure du matériau de libération de la vapeur métallique de dégazage.
Patent CA-2071534-A1 (CA)
Title: Ribozyme inhibitors
Inventor: CECH THOMAS R
IPC: A01N63/00
Filed: 1990-10-16
Abstract: Method for reducing the in vivo effect on an animal of infection with an organism having a ribozyme with a biological activity.  The method includes providing a nucleic acid or amino acid based compound that interacts specifically  with the ribozyme. The nucleic acid or amino acid based compound is then introduced into the animal in a manner to allow contact of the nucleic acid or amino acid based compound with the ribozyme, whereby the biological activity of the ribozyme is reduced or eliminated.
Patent CA-2072685-A1 (CA)
Title: Motor driven fluid compressor within hermetic housing
Inventor: FUKUI TSUYOSHI
IPC: F01C1/02
Filed: 1992-06-29
Abstract: A motor driven fluid compressor having compression and drive mechanisms within a hermetically sealed housing is disclosed.  The compressor includes the compression mechanism, and the drive mechanism.  A drive shaft and a motor rotates the drive shaft.  A hermetically sealed housing contains the compression mechanism and the drive mechanism.  The drive shaft is operatively connected to the compression mechanism, and is rotatably supported by a first inner block and a second inner block which is axially spaced from the first inner block.  The first and second inner blocks are integral with first and second portions of the housing, respectively.  As a result, the longitudinal axis of holes formed within the first and second inner blocks and the longitudinal axis of the compressor housing are easily and precisely aligned without increasing in the manufacturing cost.
Patent CA-2073983-A1 (CA)
Inventor: CALVERLEY MARTIN J
IPC: A61P43/00
Filed: 1991-03-22
Abstract: Novel compounds of the following Formula I are provided herein.      in which Formula: X is hydrogen or hydroxy; Y is oxygen, sulphur, S(O) or S(O)2; R1 and R2, which may be the same or different stand for hydrogen or C1-C6 hydrocarbyl; or R1 and R2, taken together with the carbon atom, starred in Formula I, bearing the group X, can form a C3-C8 carbocyclic ring; Q is an unsubstituted C1-C8 hydrocarbylene diradical, or is a C1-C8 hydrocarbylene diradical which is substituted with at least one fluorine atom, R3 is hydrogen, methyl or ethyl; n is 0 or 1; and derivatives of the compounds of Formula I in which at least one hydroxy group has been transformed into a masked group comprising -O-acyl or -O-glycosyl, or a phosphate ester, such masked groups being hydrolysable in vivo. Processes for preparing such compounds are also provided, as well as pharmaceutical composition containing such compounds and various treatment and prophylactic uses. These compounds show antiinflammatory and immunomodulating effects as well as a strong activity in inducing cell differentiation and inhibiting undesirable proliferation of certain cancer and skin cells.
Patent CA-2074740-A1 (CA)
Title: Load separating mechanism for a roller conveyor
Inventor: AGNOFF CHARLES
IPC: B65G47/88
Filed: 1992-07-28
Abstract: ABSTRACT OF DISCLOSURE A load separating mechanism for a roller conveyor includes an actuating member pivotally mounted at a discharge point on the conveyor and a stop member pivotally mounted at a load holding point upstream from the discharge point. The actuating member and stop member are operatively connected so that the stop member assumes a load blocking position to arrest further movement of the loads when a lead load at the discharge point depresses the actuating member. When the lead load is removed, the actuating member returns under the force of a biasing means to an extended position thereby causing the stop member to assume a load releasing position. The delay means is provided for delaying the return of the actuating member to an extended position for a predetermined period after the lead load is removed from the discharge point.
Patent CA-2075783-A1 (CA)
Title: High density ink jet printhead
Inventor: PIES JOHN R
IPC: B41J2/045
Filed: 1992-08-11
Abstract: An ink jet printhead (10) for a drop-on-demand type ink jet printing system. The printhead includes a base section (12) having a series of generally parallel spaced projections (30) extending longitudinally therealong, a series of intermediate sections (32) conductively mounted on a top side of a corresponding one of the series of base section projections (30) and a top section (16) conductively mounted to a top side of each of the series of intermediate sections (32). <IMAGE>
Patent CA-2078806-A1 (CA)
Title: Photothermographic article for preparing multicolor images
Inventor: ISHIDA TAKUZO
IPC: G03C8/40
Filed: 1992-09-22
Abstract: ABSTRACT OF THE DISCLOSURE           This invention relates to heat-developable photographic materials, i.e., photothermographic materials. It has been described in the patent literature to transfer a dye image formed in a photothermographic system by means of a transfer solvent.          It would be desirable to provide a photothermographic material capable of producing multiple color images, wherein image development) including dye transfer, can be carried out without the use of liquids. This invention provides a photothermographic article comprising (a) an image-receiving element comprising a polymeric image-receiving layer, (b) strippably adhered to said image-receiving element, an imageable photothermographic element comprising a plurality of emulsion layers, each of which emulsion layers comprises a binder, a silver source material, photosensitive silver halide in catalytic proximity to the silver source material, and a leuco dye, and (c) interposed between each pair of said emulsion layers, a dye-permeable interlayer. The dyes formed in each emulsion layer, i.e., magenta dye in the green sensitive layer, yellow dye in the blue sensitive layer, and cyan dye in the red sensitive layer, migrate through the interlayers and the emulsion layers to the image-receiving layer as the photothermographic article is heated for development.  Dye formation and dye transfer can be carried out without the aid of any transfer solvent or wet chemicals.  After development by heat, the imageable photothermographic element, which is strippably adhered to the image receiving layer, can be peeled away from the image-receiving layer and discarded.